#190 · Programming Language Tools Developer Tool

Swift Validator

Check Swift source structure for initializer, switch, protocol, access control, and declaration problems. Processing stays in your browser.

Developer Input

Swift source

Swift Source Code

enum Status {
    case ready
    case loading
    case failed
}

struct User {
    let id: Int
    let name: String

    init(id: Int) {
        self.id = id
    }
}

func label(for status: Status) -> String {
    switch status {
    case .ready:
        return "Ready"
    case .loading:
        return "Loading"
    }
}

Validation Level

Warning Limit

issues

Validate initializers Validate switch coverage Validate access control Auto-run while typing

How to use this developer tool

Paste source code or load the included working example.
Choose the validation level and adjust the additional setting.
Enable only the checks or output options needed for this review.
Select Validate Swift and inspect the output, status, and measured processing time.
Copy or download the result after reviewing heuristic findings.

What this developer tool does

This tool performs browser-based structural and static analysis. It does not replace the official Kotlin or Swift compiler.

Source input → string and comment masking → token or rule analysis → structured output → statistics and recommendations.

Heuristic findings are labeled for review. Confirm production code with the official compiler, IDE, and project test suite.

Example

The loaded example is executable test input for the Swift Validator. Run the tool to see its expected output and status.

Tips for better output

Use complete declarations when possible so scope and block ranges can be estimated correctly.
Keep strings and comments intact; the analyzer masks them before structural processing.
Review every automatic conversion before replacing source in a production project.
Use the official compiler for final syntax, type, dependency, and platform validation.

FAQ

How can I validate Swift stored property initialization online?

The validator compares stored properties with initializer assignments and reports properties that may remain uninitialized.

How do I find missing enum cases in a Swift switch?

The validator extracts nearby enum cases and compares them with switch case labels when the relationship can be inferred.

Can I check duplicate Swift declarations online?

Yes. Duplicate properties and likely duplicate function declarations are reported by scope.

How can I detect invalid Swift access control combinations?

Enable access control validation to flag patterns such as open members in non-open contexts or private types exposed publicly.

Does this Swift validator replace Xcode build errors?

No. It provides structural and heuristic validation and should be followed by an Xcode or swiftc build.

Related developer tools

TypeScript Checker TypeScript Generator TypeScript Formatter TypeScript Converter

Swift Validator modules

Module	Purpose
Initialization	Checks stored property assignment candidates.
Switch Coverage	Compares enum and switch cases.
Access Control	Flags selected invalid combinations.

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